The idea for this crystal tester circuit sprung out of the need of testing a large number of oscillator crystals lying unused in a big hobby box. testing the crystals one by one without the ...

2. This basic test circuit is a Pierce-gate oscillator, which provides readout of crystal frequency. There are two resistor adjustments (POT1 and POT2) for optimal performance, which is a function ...

For battery-powered circuits, it is easy to build an ultralow-current crystal oscillator designed around a 32.768-kHz crystal. This crystal is common for real-time-clock circuits. Because these ...

He picked up a frequency counter/crystal tester kit that was quite inexpensive — under $10. He built it, and then tried it to see how well it would work in-circuit.

He picked up a frequency counter/crystal tester kit that was quite inexpensive — under $10. He built it, and then tried it to see how well it would work in-circuit.

Simple Tester Provides Readout of Crystal Frequency (.PDF Download) Dec. 2, 2014 ...